Anyone ever heard about this Russian, uh, "radio station"? It broadcasts on shortwave (proper name UVB-76) and mostly just plays a buzzing sound (as heard at the start and finish of the recording above) but occasionally obscure messages (possibly a code) will be played. Plenty of conspiracy theories about what it's for and who's behind it. Otherwise, what's its purpose, I wonder? Some material for The X-Files possibly :)